预制桩挤土效应和群桩效应的监测方法  

Monitoring Methods for Extruding Effect and Group Effect of Precast Piles

作　　者：陈志坚 林涛[3] 林闽[3,2] 俞春林[3] 武刚[3] 

机构地区：[1]中国矿业大学 [2]河海大学土木工程学院南京210098 [3]云南省设计院勘察分院

出　　处：《工程勘察》2003年第4期32-34,41,共4页Geotechnical Investigation & Surveying

基　　金：973项目国家重点基础研究发展规划项目资助(2 0 0 2CB4 12 70 7)

摘　　要：以某桩基工程为例 ,阐述了预制桩挤土效应和群桩效应的机理和表现形式及其监测点布置原则 ,开展了以超静孔压、基桩轴力、桩侧土压力和桩顶偏移为主的原型监测 。Based on the project of pile foundation the mechanism and disadvantages of extruding effect and group effect of precast piles are analyzed,and the principle for the layout of monitoring points is presented.The excess pore water pressure,axial force,lateral soil pressure and top displacement of piles were monitored in the field.The mobile inverted plumb system was introduced to monitor the top displacement of counter pile,and the gravel piles used as wells are adopted to pump the water in clay efficiently.

关 键 词：预制桩 挤土效应 群桩效应 监测 基桩 轴力 碎石桩 降水井 

分 类 号：TU473.13[建筑科学—结构工程]